Performance evaluation of upland rice (Oryza sativa L.) and variability study for yield and related traits in South West Ethiopia

Altaye Tiruneh, Awel Beshir, Abayneh Kacharo

P.O.Box 101, Bonga

Accepted 1 April 2021                                                                                                                          

Citation: Altaye T, Awel B, Abayneh K (2021). Performance evaluation of upland rice (Oryza sativa L.) and variability study for yield and related traits in South West Ethiopia. International Journal of Plant Breeding and Crop Science, 8(2): 1050-1054.

 

Copyright: © 2021: Altaye et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

This study aimed at assessing genetic variability and to evaluate the performance of 13 improved upland rice varieties for yield and its components based on morphological traits. The field experiment was conducted using a randomized block design at Guraferda and Gimbo districts in the 2019 main cropping season. The analysis of variance (ANOVA) over the two locations revealed significant differences (p≤ 0.05) among varieties for days to 50% heading, days to 85% maturity, panicle length, thousand-grain weight, and grain yield. Similarly, the ANOVA for variety by location interactions depicted significant differences among the tested varieties for days to 50% heading, days to 85% maturity, and thousand-grain weight. High heritability was obtained from days to heading (88.5%), panicle length (85.0%), and grain yield (85.2%), which indicates these traits can be easily improved through selection. High to medium broad sense heritability and genetic advance as percentage of the mean for days to heading, thousand-grain weight, and grain yield indicates a good opportunity for improvement through selection using their phenotypic performance. This is mainly due to the high role of additive gene action in the expression of such traits. This study confirmed the presence of variability among varieties for most of the studied traits, which will create an opportunity for breeders to improve rice yield and other attributes.

Keywords: Evaluation, upland rice (Oryza sativa L.), Southwestern Ethiopia, Heritability, Variability

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